/* ============================================================
   Alexander James King — personal site
   Shared stylesheet
   ============================================================ */

/* ---------- Tokens ---------- */
:root {
  --bg: #faf8f5;
  --surface: #f3efe9;
  --text: #1a1a1a;
  --text-dim: #6b6660;
  --text-faint: #9b9690;
  --rule: #e7e1d7;
  --rule-strong: #c9c2b6;
  --accent: #1a1a1a;
  --link-underline: #c9c2b6;

  --serif: "Source Serif 4", "Source Serif Pro", Georgia, "Times New Roman", serif;
  --sans:  "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  --mono:  "JetBrains Mono", "SF Mono", Menlo, Consolas, monospace;

  --body-font: var(--serif);
  --meta-font: var(--mono);
  --heading-font: var(--serif);

  --col: 640px;
  --col-wide: 880px;
  --density: 1.2;      /* default: very airy */
}

:root[data-theme="dark"] {
  --bg: #111110;
  --surface: #1a1a18;
  --text: #ebe7df;
  --text-dim: #8a857c;
  --text-faint: #5a564f;
  --rule: #26251f;
  --rule-strong: #38362f;
  --accent: #ebe7df;
  --link-underline: #38362f;
}

:root[data-accent="warm"] { --accent: oklch(64% 0.12 50); }
:root[data-accent="cool"] { --accent: oklch(60% 0.10 240); }
:root[data-accent="green"]{ --accent: oklch(55% 0.09 155); }

:root[data-density="airy"]   { --density: 1.35; }
:root[data-density="normal"] { --density: 1; }
:root[data-density="tight"]  { --density: 0.78; }

:root[data-fonts="sans"] {
  --body-font: var(--sans);
  --heading-font: var(--sans);
}
:root[data-fonts="mono"] {
  --body-font: var(--mono);
  --heading-font: var(--mono);
}
:root[data-fonts="mixed"] {
  --body-font: var(--sans);
  --heading-font: var(--serif);
}

/* ---------- Base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html {
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}
body {
  font-family: var(--body-font);
  font-size: 18px;
  line-height: 1.62;
  font-weight: 400;
  font-optical-sizing: auto;
  letter-spacing: 0.003em;
  transition: background 220ms ease, color 220ms ease;
}

::selection { background: var(--text); color: var(--bg); }

a {
  color: inherit;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
  text-decoration-color: var(--link-underline);
  transition: text-decoration-color 140ms ease, color 140ms ease;
}
a:hover { text-decoration-color: var(--text); color: var(--accent); }

hr {
  border: 0;
  border-top: 1px solid var(--rule);
  margin: 0;
}

img { max-width: 100%; height: auto; }

/* ---------- Layout ---------- */
.page {
  max-width: var(--col);
  margin: 0 auto;
  padding: calc(60px * var(--density)) 32px calc(70px * var(--density));
}
.page.wide { max-width: var(--col-wide); }

@media (max-width: 640px) {
  body { font-size: 17px; }
  .page { padding: 32px 22px 44px; }
}

/* ---------- Masthead ---------- */
header.masthead {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
  margin-bottom: calc(36px * var(--density));
}
.mark {
  font-family: var(--heading-font);
  font-weight: 500;
  font-size: 16px;
  letter-spacing: 0.005em;
}
.mark a { text-decoration: none; }
.mark .sep { color: var(--text-faint); font-weight: 400; margin: 0 8px; }
.mark .crumb { color: var(--text-dim); font-weight: 400; font-style: italic; }

.nav {
  display: flex;
  gap: 26px;
  font-family: var(--meta-font);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  text-transform: lowercase;
  color: var(--text-dim);
}
.nav a { text-decoration: none; }
.nav a:hover { color: var(--text); }
.nav a.here { color: var(--text); }

/* ---------- Index landing (home) ---------- */
.landing h1 {
  font-family: var(--heading-font);
  font-weight: 400;
  font-size: clamp(34px, 5.4vw, 50px);
  line-height: 1.08;
  letter-spacing: -0.018em;
  margin: 0 0 40px;
  text-wrap: balance;
  max-width: 14ch;
}
.landing h1 em {
  font-style: italic;
  color: var(--text-dim);
  font-weight: 300;
}
.landing .lede {
  font-size: 18px;
  line-height: 1.65;
  color: var(--text);
  margin: 0 0 20px;
  max-width: 54ch;
  text-wrap: pretty;
}
.landing .lede.dim { color: var(--text-dim); }

.landing .meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 20px;
  font-family: var(--meta-font);
  font-size: 11.5px;
  letter-spacing: 0.05em;
  color: var(--text-dim);
  margin-top: 36px;
}
.landing .meta-row a { text-decoration-color: var(--rule); }
.landing .meta-row .dot { color: var(--text-faint); }

/* Big index list — rows that lead to sub-pages */
.index-list {
  list-style: none;
  padding: 0;
  margin: calc(88px * var(--density)) 0 0;
  border-top: 1px solid var(--rule);
}
.index-list li {
  border-bottom: 1px solid var(--rule);
}
.index-list a.row {
  display: grid;
  grid-template-columns: 80px 1fr auto;
  gap: 20px;
  align-items: baseline;
  padding: calc(22px * var(--density)) 0;
  text-decoration: none;
  color: inherit;
  transition: color 140ms ease;
}
.index-list a.row:hover { color: var(--accent); }
.index-list a.row:hover .index-arrow { color: var(--accent); transform: translateX(2px); }
.index-list .index-num {
  font-family: var(--meta-font);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--text-faint);
}
.index-list .index-label {
  font-family: var(--heading-font);
  font-size: 22px;
  font-weight: 400;
  letter-spacing: -0.005em;
  line-height: 1.25;
}
.index-list .index-sub {
  font-family: var(--meta-font);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--text-faint);
  margin-top: 4px;
}
.index-list .index-arrow {
  font-family: var(--meta-font);
  font-size: 14px;
  color: var(--text-faint);
  transition: transform 160ms ease, color 140ms ease;
  align-self: center;
}
@media (max-width: 540px) {
  .index-list a.row { grid-template-columns: 54px 1fr auto; gap: 14px; padding: 22px 0; }
  .index-list .index-label { font-size: 19px; }
}

/* ---------- Section (used on sub-pages) ---------- */
section { margin-top: calc(48px * var(--density)); }
section:first-of-type { margin-top: 0; }
section > header {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 40px;
}
section > header h2 {
  font-family: var(--meta-font);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin: 0;
}
section > header .count {
  font-family: var(--meta-font);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--text-faint);
}
section > header .rule {
  flex: 1;
  height: 1px;
  background: var(--rule);
  transform: translateY(-3px);
}

/* ---------- Page title block (sub-pages) ---------- */
.page-title {
  margin-bottom: calc(24px * var(--density));
}
.page-title .kicker {
  font-family: var(--meta-font);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin: 0 0 18px;
}
.page-title h1 {
  font-family: var(--heading-font);
  font-weight: 400;
  font-size: clamp(30px, 4.2vw, 40px);
  line-height: 1.15;
  letter-spacing: -0.012em;
  margin: 0 0 20px;
  max-width: none;
}
.page-title h1 em { font-style: italic; color: var(--text); opacity: 0.55; font-weight: 300; }
.page-title .subtitle {
  font-size: 17px;
  color: var(--text-dim);
  max-width: 54ch;
  margin: 0;
  line-height: 1.6;
  text-wrap: pretty;
}

/* ---------- Writing list ---------- */
.writing ol { list-style: none; padding: 0; margin: 0; }
.writing li {
  display: grid;
  grid-template-columns: 92px 1fr;
  gap: 24px;
  align-items: baseline;
  padding: calc(22px * var(--density)) 0;
  border-bottom: 1px solid var(--rule);
}
.writing li:first-child { border-top: 1px solid var(--rule); }
.writing .date {
  font-family: var(--meta-font);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--text-faint);
  white-space: nowrap;
  padding-top: 4px;
}
.writing .title {
  font-family: var(--heading-font);
  font-size: 20px;
  line-height: 1.3;
  font-weight: 400;
  letter-spacing: -0.006em;
}
.writing .title a { text-decoration: none; }
.writing .title a:hover { color: var(--accent); }
.writing .excerpt {
  font-size: 15.5px;
  color: var(--text-dim);
  line-height: 1.55;
  margin-top: 8px;
  max-width: 58ch;
}
:root[data-blog="minimal"] .writing .excerpt { display: none; }

.writing .tag {
  display: inline-block;
  font-family: var(--meta-font);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-faint);
  border: 1px solid var(--rule);
  border-radius: 999px;
  padding: 2px 9px;
  margin-left: 10px;
  vertical-align: 2px;
}

/* ---------- Blog filter bar ---------- */
.filter-bar {
  display: flex;
  gap: 0;
  margin: 0 0 18px;
  font-family: var(--meta-font);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border-bottom: 1px solid var(--rule);
  padding-bottom: 14px;
}
.filter-bar button {
  background: transparent;
  border: 0;
  color: var(--text-faint);
  padding: 4px 14px 4px 0;
  margin-right: 4px;
  cursor: pointer;
  font-family: inherit;
  font-size: inherit;
  letter-spacing: inherit;
  text-transform: inherit;
  transition: color 140ms;
}
.filter-bar button:hover { color: var(--text-dim); }
.filter-bar button.on { color: var(--text); }
.filter-bar .count {
  margin-left: auto;
  color: var(--text-faint);
  padding-top: 4px;
}

.writing li.hidden { display: none; }

/* ---------- Life page ---------- */
.photo-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin: calc(40px * var(--density)) 0;
}
.photo-grid.two { grid-template-columns: repeat(2, 1fr); }
.photo-slot {
  position: relative;
  aspect-ratio: 4 / 5;
  background:
    repeating-linear-gradient(
      135deg,
      color-mix(in oklab, var(--surface) 100%, transparent) 0 6px,
      color-mix(in oklab, var(--bg) 100%, transparent) 6px 12px
    );
  border: 1px solid var(--rule);
  border-radius: 3px;
  display: flex;
  align-items: flex-end;
  justify-content: flex-start;
  overflow: hidden;
}
.photo-slot.wide { aspect-ratio: 3 / 2; }
.photo-slot .cap {
  font-family: var(--meta-font);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-dim);
  background: color-mix(in oklab, var(--bg) 85%, transparent);
  backdrop-filter: blur(4px);
  padding: 6px 10px;
  margin: 10px;
  border-radius: 2px;
  border: 1px solid var(--rule);
}
@media (max-width: 640px) {
  .photo-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
}

@media (max-width: 540px) {
  .writing li { grid-template-columns: 1fr; gap: 4px; }
  .writing .date { padding-top: 0; }
}

/* ---------- Experience / lines ---------- */
.lines { list-style: none; padding: 0; margin: 0; }
.lines li {
  display: grid;
  grid-template-columns: 92px 1fr;
  gap: 24px;
  padding: calc(18px * var(--density)) 0;
  border-bottom: 1px solid var(--rule);
  font-size: 16px;
  align-items: baseline;
}
.lines li:first-child { border-top: 1px solid var(--rule); }
.lines .k {
  font-family: var(--meta-font);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--text-faint);
  padding-top: 3px;
}
.lines strong { font-weight: 500; }
.lines em { color: var(--text-dim); font-style: italic; }
.lines .detail { color: var(--text-dim); font-size: 15px; }
.lines .tech {
  font-family: var(--meta-font);
  font-size: 10.5px;
  color: var(--text-faint);
  letter-spacing: 0.05em;
  margin-top: 8px;
}
@media (max-width: 540px) {
  .lines li { grid-template-columns: 1fr; gap: 4px; }
}

/* ---------- Prose (blog posts) ---------- */
.prose {
  font-size: 19px;
  line-height: 1.68;
}
.prose p {
  margin: 0 0 1.3em;
  text-wrap: pretty;
}
.prose p:first-of-type::first-line {
  /* subtle emphasis on first line */
}
.prose h2 {
  font-family: var(--heading-font);
  font-weight: 500;
  font-size: 24px;
  letter-spacing: -0.005em;
  margin: 2.4em 0 0.7em;
}
.prose h3 {
  font-family: var(--heading-font);
  font-weight: 500;
  font-size: 19px;
  margin: 2em 0 0.5em;
}
.prose blockquote {
  margin: 1.8em 0;
  padding: 0 0 0 22px;
  border-left: 1px solid var(--rule-strong);
  color: var(--text-dim);
  font-style: italic;
}
.prose ul, .prose ol { padding-left: 1.4em; margin: 0 0 1.3em; }
.prose li { margin: 0.3em 0; }
.prose code {
  font-family: var(--mono);
  font-size: 0.86em;
  background: var(--surface);
  padding: 1px 6px;
  border-radius: 4px;
  border: 1px solid var(--rule);
}
.prose pre {
  font-family: var(--mono);
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: 6px;
  padding: 18px 20px;
  overflow-x: auto;
  font-size: 13.5px;
  line-height: 1.55;
  margin: 1.6em 0;
}
.prose pre code { background: none; border: 0; padding: 0; }
.prose em { color: var(--text-dim); }
.prose hr {
  margin: 2.4em auto;
  width: 120px;
  border-top: 1px solid var(--rule-strong);
}

.post-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 18px;
  font-family: var(--meta-font);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin: 0 0 24px;
}
.post-meta .dot { color: var(--text-faint); }

.post-nav {
  margin-top: calc(48px * var(--density));
  padding-top: 32px;
  border-top: 1px solid var(--rule);
  display: flex;
  justify-content: space-between;
  font-family: var(--meta-font);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-dim);
  gap: 20px;
  flex-wrap: wrap;
}
.post-nav a { text-decoration: none; }
.post-nav a:hover { color: var(--text); }

/* ---------- Footer ---------- */
footer.foot {
  margin-top: calc(70px * var(--density));
  padding-top: 28px;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  font-family: var(--meta-font);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--text-faint);
}
footer.foot a { text-decoration: none; color: var(--text-dim); }
footer.foot a:hover { color: var(--text); }

/* ---------- Theme toggle ---------- */
.toggle {
  position: fixed;
  top: 24px;
  right: 24px;
  background: color-mix(in oklab, var(--bg) 72%, transparent);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--rule);
  color: var(--text-dim);
  width: 34px;
  height: 34px;
  padding: 0;
  border-radius: 999px;
  cursor: pointer;
  transition: color 140ms, border-color 140ms, background 140ms;
  z-index: 40;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.toggle:hover { color: var(--text); border-color: var(--rule-strong); }
.toggle .icon-sun,
.toggle .icon-moon { display: none; }
:root[data-theme="light"] .toggle .icon-moon { display: block; }
:root[data-theme="dark"]  .toggle .icon-sun  { display: block; }
@media (max-width: 640px) {
  .toggle { top: 14px; right: 14px; width: 32px; height: 32px; }
}

/* ---------- Tweaks panel ---------- */
.tweaks {
  position: fixed;
  bottom: 20px;
  right: 20px;
  width: 278px;
  background: var(--bg);
  border: 1px solid var(--rule-strong);
  border-radius: 10px;
  padding: 14px 14px 12px;
  font-family: var(--sans);
  font-size: 12.5px;
  color: var(--text);
  box-shadow: 0 20px 60px -20px rgba(0,0,0,0.22);
  z-index: 50;
  display: none;
}
:root[data-theme="dark"] .tweaks {
  box-shadow: 0 20px 60px -20px rgba(0,0,0,0.6);
}
.tweaks.on { display: block; }
.tweaks h4 {
  margin: 0 0 12px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-dim);
  font-weight: 500;
}
.tweaks .row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
  gap: 8px;
}
.tweaks .row:last-child { margin-bottom: 0; }
.tweaks label { color: var(--text-dim); font-size: 11.5px; }
.tweaks .seg {
  display: inline-flex;
  border: 1px solid var(--rule);
  border-radius: 6px;
  overflow: hidden;
}
.tweaks .seg button {
  background: transparent;
  border: 0;
  color: var(--text-dim);
  padding: 4px 8px;
  font-size: 10.5px;
  font-family: var(--mono);
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: background 120ms, color 120ms;
}
.tweaks .seg button:hover { color: var(--text); }
.tweaks .seg button.sel { background: var(--text); color: var(--bg); }

/* ---------- Layout variants ---------- */
/* compact: tighter spacing on index */
:root[data-layout="compact"] .index-list a.row {
  padding: 16px 0;
}
:root[data-layout="compact"] .landing h1 {
  font-size: clamp(30px, 4.2vw, 40px);
  margin-bottom: 28px;
}
:root[data-layout="compact"] .index-list {
  margin-top: 56px;
}

/* narrative: the home page reads as an essay, no big index list */
:root[data-layout="narrative"] .index-list {
  margin-top: calc(72px * var(--density));
  border: 0;
}
:root[data-layout="narrative"] .index-list li { border: 0; }
:root[data-layout="narrative"] .index-list a.row {
  grid-template-columns: auto 1fr auto;
  padding: 10px 0;
  gap: 16px;
}
:root[data-layout="narrative"] .index-list .index-num { display: none; }
:root[data-layout="narrative"] .index-list .index-sub { display: none; }
:root[data-layout="narrative"] .index-list .index-label { font-size: 17px; }

/* ---------- Print ---------- */
@media print {
  .toggle, .tweaks { display: none !important; }
  body { background: #fff; color: #000; font-size: 11pt; }
  .page { padding: 0; max-width: none; }
  a { color: #000; }
}